Home / 15,275.27-21,079.86-9,306.96

Finding the Fourth Proportional to 15,275.27, 21,079.86 and 9,306.96

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Solution

The fourth proportional to 15,275.27, 21,079.86 and 9,306.96 is: 12,843.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,275.27 : 21,079.86 = 9,306.96 : x
  2. Step 2: Convert to fraction form
    15,275.27/21,079.86 = 9,306.96/x
  3. Step 3: Cross multiply
    15,275.27x = 21,079.86 × 9,306.96
  4. Step 4: Simplify right side
    15,275.27x = 196,189,413.83
  5. Step 5: Solve for x
    x = 196,189,413.83/15,275.27
  6. Step 6: Final answer
    x = 12,843.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.